diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ee08bdeb..f4a476a3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -50,7 +50,7 @@ jobs:
       uses: actions-rs/cargo@v1
       with:
         command: test
-        args: --all {{matrix.flags}}
+        args: --all ${{matrix.flags}}
   # no-std builds are a bit more extensive to test
   no_std_build:
     name: NoStdBuild